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Title: Visibility of cold atomic gases in optical lattices for finite temperatures

Journal Article · · Physical Review. A
 [1];  [2]
  1. Arnold Sommerfeld Center, Ludwig Maximilian Universitaet, Theresienstrasse 37, 80333 Muenchen (Germany)
  2. Fachbereich Physik, Universitaet Duisburg-Essen, Lotharstrasse 1, 47048 Duisburg (Germany)

In nearly all experiments with ultracold atoms time-of-flight pictures are the only data available. In this paper we present an analytical strong-coupling calculation for those time-of-flight pictures of bosons in a three-dimensional optical lattice in the Mott phase. This allows us to determine the visibility, which quantifies the contrast of peaks in the time-of-flight pictures, and we suggest how to use it as a thermometer.

OSTI ID:
21304740
Journal Information:
Physical Review. A, Vol. 79, Issue 5; Other Information: DOI: 10.1103/PhysRevA.79.053623; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
Country of Publication:
United States
Language:
English